## In this test we check how the unwind information is dumped with the use of --unwind.
## First, check that both llvm-readobj and llvm-readelf are able to dump a valid unwind information.
## Check that the output is the same for these tools.
## The memory size of the PT_GNU_EH_FRAME equals its file size and they both are equal to 0x3c.
## 0x3c is the size of the .eh_frame_hdr section.
# RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x3c -DFILESIZE=0x3c -o %t1.valid
# RUN: llvm-readobj --unwind %t1.valid | FileCheck %s
# RUN: llvm-readelf --sections --unwind %t1.valid | FileCheck %s --check-prefixes=SIZE,CHECK
## Validate the size of the .eh_frame_hdr section.
# SIZE: [Nr] Name Type Address Off Size
# SIZE: [ 2] .eh_frame_hdr PROGBITS 00000000004013c0 0000bc 00003c
# CHECK: EHFrameHeader {
# CHECK-NEXT: Address: 0x4013c0
# CHECK-NEXT: Offset: 0xbc
# CHECK-NEXT: Size: 0x3c
# CHECK-NEXT: Corresponding Section: .eh_frame_hdr
# CHECK-NEXT: Header {
# CHECK-NEXT: version: 1
# CHECK-NEXT: eh_frame_ptr_enc: 0x1b
# CHECK-NEXT: fde_count_enc: 0x3
# CHECK-NEXT: table_enc: 0x3b
# CHECK-NEXT: eh_frame_ptr: 0x401400
# CHECK-NEXT: fde_count: 6
# CHECK-NEXT: entry 0 {
# CHECK-NEXT: initial_location: 0x4004a0
# CHECK-NEXT: address: 0x401448
# CHECK-NEXT: }
# CHECK-NEXT: entry 1 {
# CHECK-NEXT: initial_location: 0x4004d0
# CHECK-NEXT: address: 0x401418
# CHECK-NEXT: }
# CHECK-NEXT: entry 2 {
# CHECK-NEXT: initial_location: 0x4005b6
# CHECK-NEXT: address: 0x401470
# CHECK-NEXT: }
# CHECK-NEXT: entry 3 {
# CHECK-NEXT: initial_location: 0x4005d0
# CHECK-NEXT: address: 0x401490
# CHECK-NEXT: }
# CHECK-NEXT: entry 4 {
# CHECK-NEXT: initial_location: 0x401250
# CHECK-NEXT: address: 0x4014c0
# CHECK-NEXT: }
# CHECK-NEXT: entry 5 {
# CHECK-NEXT: initial_location: 0x4012c0
# CHECK-NEXT: address: 0x4014f0
# CHECK-NEXT: }
# CHECK-NEXT: }
# CHECK-NEXT:}
# CHECK: .eh_frame section at offset 0xf8 address 0x401400:
# CHECK-NEXT: [0x401400] CIE length=20
# CHECK-NEXT: version: 1
# CHECK-NEXT: augmentation: zR
# CHECK-NEXT: code_alignment_factor: 1
# CHECK-NEXT: data_alignment_factor: -8
# CHECK-NEXT: return_address_register: 16
# CHECK: Program:
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_offset: reg16 -8
# CHECK-NEXT: DW_CFA_undefined: reg16
# CHECK: [0x401418] FDE length=20 cie=[0x401400]
# CHECK-NEXT: initial_location: 0x4004d0
# CHECK-NEXT: address_range: 0x2a (end : 0x4004fa)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401430] CIE length=20
# CHECK-NEXT: version: 1
# CHECK-NEXT: augmentation: zR
# CHECK-NEXT: code_alignment_factor: 1
# CHECK-NEXT: data_alignment_factor: -8
# CHECK-NEXT: return_address_register: 16
# CHECK: Program:
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_offset: reg16 -8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401448] FDE length=36 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4004a0
# CHECK-NEXT: address_range: 0x20 (end : 0x4004c0)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_def_cfa_offset: +16
# CHECK-NEXT: DW_CFA_advance_loc: 6
# CHECK-NEXT: DW_CFA_def_cfa_offset: +24
# CHECK-NEXT: DW_CFA_advance_loc: 10
# CHECK-NEXT: DW_CFA_def_cfa_expression: DW_OP_breg7 +8, DW_OP_breg16 +0, DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, DW_OP_lit3, DW_OP_shl, DW_OP_plus
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401470] FDE length=28 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4005b6
# CHECK-NEXT: address_range: 0x10 (end : 0x4005c6)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_advance_loc: 1
# CHECK-NEXT: DW_CFA_def_cfa_offset: +16
# CHECK-NEXT: DW_CFA_offset: reg6 -16
# CHECK-NEXT: DW_CFA_advance_loc: 3
# CHECK-NEXT: DW_CFA_def_cfa_register: reg6
# CHECK-NEXT: DW_CFA_advance_loc: 11
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x401490] FDE length=44 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4005d0
# CHECK-NEXT: address_range: 0xc7f (end : 0x40124f)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_def_cfa: reg10 +0
# CHECK-NEXT: DW_CFA_advance_loc: 9
# CHECK-NEXT: DW_CFA_expression: reg6 DW_OP_breg6 +0
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_def_cfa_expression: DW_OP_breg6 -8, DW_OP_deref
# CHECK-NEXT: DW_CFA_advance_loc2: 3174
# CHECK-NEXT: DW_CFA_def_cfa: reg10 +0
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x4014c0] FDE length=44 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x401250
# CHECK-NEXT: address_range: 0x66 (end : 0x4012b6)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_advance_loc: 1
# CHECK-NEXT: DW_CFA_def_cfa_offset: +16
# CHECK-NEXT: DW_CFA_offset: reg6 -16
# CHECK-NEXT: DW_CFA_advance_loc: 3
# CHECK-NEXT: DW_CFA_def_cfa_register: reg6
# CHECK-NEXT: DW_CFA_advance_loc: 2
# CHECK-NEXT: DW_CFA_offset: reg15 -24
# CHECK-NEXT: DW_CFA_advance_loc: 5
# CHECK-NEXT: DW_CFA_offset: reg14 -32
# CHECK-NEXT: DW_CFA_advance_loc: 7
# CHECK-NEXT: DW_CFA_offset: reg13 -40
# CHECK-NEXT: DW_CFA_offset: reg12 -48
# CHECK-NEXT: DW_CFA_advance_loc: 8
# CHECK-NEXT: DW_CFA_offset: reg3 -56
# CHECK-NEXT: DW_CFA_advance_loc1: 75
# CHECK-NEXT: DW_CFA_def_cfa: reg7 +8
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK: [0x4014f0] FDE length=20 cie=[0x401430]
# CHECK-NEXT: initial_location: 0x4012c0
# CHECK-NEXT: address_range: 0x1 (end : 0x4012c1)
# CHECK: Program:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
# CHECK-NEXT: DW_CFA_nop:
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Entry: 0x0000000000400000
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Address: 0x0000000000400000
AddressAlign: 16
Content: 50C704240020400031C05AC3
- Name: .eh_frame_hdr
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x00000000004013c0
AddressAlign: 4
Content: 011B033B3C00000006000000E0F0FFFF8800000010F1FFFF58000000F6F1FFFFB000000010F2FFFFD000000090FEFFFF0001000000FFFFFF30010000
- Name: .eh_frame
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC ]
Address: 0x0000000000401400
AddressAlign: 8
Content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
Symbols:
- Name: myfunc
Type: STT_FUNC
Section: .text
Value: 0x0000000000400000
Binding: STB_GLOBAL
ProgramHeaders:
- Type: PT_LOAD
Flags: [ PF_X, PF_R ]
VAddr: 0x00400000
PAddr: 0x00400000
FirstSec: .text
LastSec: .text
- Type: PT_GNU_EH_FRAME
Flags: [ PF_X, PF_R ]
VAddr: 0x004013C0
PAddr: 0x004013C0
MemSize: [[MEMSIZE]]
FileSize: [[FILESIZE]]
FirstSec: .eh_frame_hdr
LastSec: .eh_frame_hdr
## Document we report a error when the memory size of the PT_GNU_EH_FRAME does not match its file size.
## TODO: we want to report a warning and continue dumping instead.
# RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x3b -DFILESIZE=0x3c -o %t1.size.mismatch
# RUN: not llvm-readobj --unwind %t1.size.mismatch 2>&1 | \
# RUN: FileCheck -DFILE=%t1.size.mismatch %s --check-prefix=SIZE-MISMATCH
# RUN: not llvm-readelf --unwind %t1.size.mismatch 2>&1 | \
# RUN: FileCheck -DFILE=%t1.size.mismatch %s --check-prefix=SIZE-MISMATCH
# SIZE-MISMATCH: error: '[[FILE]]': p_memsz does not match p_filesz for GNU_EH_FRAME
## Check we partially dump the unwind information when the PT_GNU_EH_FRAME segment
## points to truncated data.
# RUN: yaml2obj --docnum=1 %s -DMEMSIZE=0x1 -DFILESIZE=0x1 -o %t1.truncated
# RUN: not llvm-readobj --unwind %t1.truncated 2>&1 | FileCheck -DFILE=%t1.truncated %s --check-prefix=TRUNCATED
# RUN: not llvm-readelf --unwind %t1.truncated 2>&1 | FileCheck -DFILE=%t1.truncated %s --check-prefix=TRUNCATED
# TRUNCATED: EHFrameHeader {
# TRUNCATED-NEXT: Address: 0x4013c0
# TRUNCATED-NEXT: Offset: 0xbc
# TRUNCATED-NEXT: Size: 0x1
# TRUNCATED-NEXT: Corresponding Section: .eh_frame_hdr
# TRUNCATED-NEXT: Header {
# TRUNCATED-NEXT: version: 1
# TRUNCATED-NEXT: eh_frame_ptr_enc: 0x0
# TRUNCATED-NEXT: error: '[[FILE]]': unexpected encoding eh_frame_ptr_enc
## Check we report an error when the tool is unable to parse .eh_frame section.
# RUN: yaml2obj --docnum=2 %s -o %t2.exe
# RUN: not llvm-readobj --unwind %t2.exe 2>&1 | FileCheck %s -DFILE=%t2.exe --check-prefix=NO-CIE-ERR
# NO-CIE-ERR: .eh_frame section at offset 0x40 address 0x0:
# NO-CIE-ERR-NEXT: error: '[[FILE]]': parsing FDE data at 0x0 failed due to missing CIE
# NO-CIE-ERR-NOT: {{.}}
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .eh_frame
Type: SHT_X86_64_UNWIND
## The content is generated from the following code. It has no CIE.
## See the DebugInfoX86/eh-frame-cie-id.s test case for more history.
## .section .eh_frame,"a",@unwind
## .long .Lend - .LCIEptr # Length
## .LCIEptr:
## .long 0xffffffff # CIE pointer
## .quad 0x1111abcd # Initial location
## .quad 0x00010000 # Address range
## .Lend:
Content: 14000000FFFFFFFFCDAB1111000000000000010000000000
## Check we report a error when the .eh_frame section contains truncated data.
# RUN: yaml2obj --docnum=3 %s -o %t3.exe
# RUN: not llvm-readobj --unwind %t3.exe 2>&1 | FileCheck %s -DFILE=%t3.exe --check-prefix=TRUNCATED-ERR
# TRUNCATED-ERR: .eh_frame section at offset 0x34 address 0x0:
# TRUNCATED-ERR-NEXT: error: '[[FILE]]': unexpected end of data at offset 0x4
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .eh_frame
Type: SHT_PROGBITS
## Length is set to 0xFF, though the actual section length is 4.
Content: "FF000000"
## Check we report an error when we can't read the content of the .eh_frame section.
## Case A: test we report an error when the p_offset of the PT_GNU_EH_FRAME
## is invalid (goes past the end of the file).
# RUN: yaml2obj --docnum=4 %s -o %t4 -DOFFSET=0xffff0000 -DSIZE=0x1 -DBITS=32
# RUN: not llvm-readobj --unwind %t4 2>&1 \
# RUN: | FileCheck %s -DFILE=%t4 --check-prefix=BROKEN-CONTENT -DOFFSET=0xffff0000 -DSIZE=0x1
# RUN: yaml2obj --docnum=4 %s -o %t5 -DOFFSET=0x1 -DSIZE=0xffff0000 -DBITS=32
# RUN: not llvm-readobj --unwind %t5 2>&1 \
# RUN: | FileCheck %s -DFILE=%t5 --check-prefix=BROKEN-CONTENT -DOFFSET=0x1 -DSIZE=0xffff0000
# BROKEN-CONTENT: EHFrameHeader {
# BROKEN-CONTENT-NEXT: Address: 0x0
# BROKEN-CONTENT-NEXT: Offset: [[OFFSET]]
# BROKEN-CONTENT-NEXT: Size: [[SIZE]]
# BROKEN-CONTENT-NEXT: Corresponding Section:
# BROKEN-CONTENT-NEXT: error: '[[FILE]]': program header [index 0] has a p_offset ([[OFFSET]]) + p_filesz ([[SIZE]]) that is greater than the file size (0xe0)
--- !ELF
FileHeader:
Class: ELFCLASS[[BITS]]
Data: ELFDATA2LSB
Type: ET_EXEC
ProgramHeaders:
- Type: PT_GNU_EH_FRAME
MemSize: [[SIZE]]
FileSize: [[SIZE]]
Offset: [[OFFSET]]
## Case B: test we report an error when the file size of the PT_GNU_EH_FRAME
## is invalid (goes past the end of the file).
# RUN: yaml2obj --docnum=4 %s -o %t6 -DOFFSET=0x100 -DSIZE=0xffff0000 -DBITS=32
# RUN: not llvm-readobj --unwind %t6 2>&1 \
# RUN: | FileCheck %s -DFILE=%t6 --check-prefix=BROKEN-CONTENT -DOFFSET=0x100 -DSIZE=0xffff0000
## Case C: test we report an error when the offset + the file size of the PT_GNU_EH_FRAME is so large a
## value that it overflows the platform address size type.
# RUN: yaml2obj --docnum=4 %s -o %t7 -DOFFSET=0x1 -DSIZE=0xffffffff -DBITS=32
# RUN: not llvm-readobj --unwind %t7 2>&1 | FileCheck %s -DFILE=%t7 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0x1 -DSIZE=0xffffffff
# RUN: yaml2obj --docnum=4 %s -o %t8 -DOFFSET=0xffffffff -DSIZE=0x1 -DBITS=32
# RUN: not llvm-readobj --unwind %t8 2>&1 | FileCheck %s -DFILE=%t8 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0xffffffff -DSIZE=0x1
# RUN: yaml2obj --docnum=4 %s -o %t9 -DOFFSET=0x1 -DSIZE=0xffffffffffffffff -DBITS=64
# RUN: not llvm-readelf --unwind %t9 2>&1 | FileCheck %s -DFILE=%t9 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0x1 -DSIZE=0xffffffffffffffff
# RUN: yaml2obj --docnum=4 %s -o %t10 -DOFFSET=0xffffffffffffffff -DSIZE=0x1 -DBITS=64
# RUN: not llvm-readelf --unwind %t10 2>&1 | FileCheck %s -DFILE=%t10 --check-prefix=BROKEN-CONTENT2 -DOFFSET=0xffffffffffffffff -DSIZE=0x1
# BROKEN-CONTENT2: EHFrameHeader {
# BROKEN-CONTENT2-NEXT: Address: 0x0
# BROKEN-CONTENT2-NEXT: Offset: [[OFFSET]]
# BROKEN-CONTENT2-NEXT: Size: [[SIZE]]
# BROKEN-CONTENT2-NEXT: Corresponding Section:
# BROKEN-CONTENT2-NEXT: error: '[[FILE]]': program header [index 0] has a p_offset ([[OFFSET]]) + p_filesz ([[SIZE]]) that cannot be represented